Chris Huhne is suffering from pathological narcissism disorder

The chief symptom of the disorder is that you are incapable of seeing wrong in anything you do. For a classic, accidentally hilarious display of the disorder, consult Huhne's article attacking the power of the Murdoch press.

OK, Huhne does do the tiniest of mea culpas, although he doesn't actually apologise to anyone – he merely says he's not proud of his actions. The rest of the article, though, is essentially a huge exercise in self-exculpation. Because, he says, 300,000 people hand on speeding points every year, it's really somehow OK to do it. He does admit that it had a terrible effect on his family, but also on the most important person in his life – himself.

He even, staggeringly, tries to flip the whole incident in his favour by saying that he was the "only frontbencher who, with Nick Clegg's brave backing, called for the Metropolitan police to reopen the voicemail hacking inquiry into Rupert Murdoch's empire".

You can see the implication: if Nick Clegg was brave, well, so was his brilliant lieutenant for spearheading the whole campaign.

At one richly comic moment, he tries to present himself as one of a noble band of brothers: "The truth is, politicians are no more venal or self-serving than people outside politics, and often far more high-minded. (Anyone who wants to make money should go into business. You lose money in politics.) But there is something intrinsic to the process of politics that kindles distrust."

What do you think that something might be, Chris? Politicians who lie, cheat on their wives and commit crimes? Funnily enough, no, he doesn't think that's the reason – instead he comes up with some wonderful rubbish about how politics involves compromise and so the voters end up disappointed.

In the most comic bit of self-delusion, he manages to turn his adultery into a noble cause: "Given that I was falling in love with someone who was not my wife, you might think that it was an act of folly to court Murdoch's hostility, but the journalist in me rebelled. Publish and be damned. If I was not in parliament to speak out when I saw an abuse, why was I there?"

All hail the hero of the hour – the man who can turn his own adultery, his criminal behaviour, his repeated lying, into a triumphant fight against the evil press. It would be funny, if it wasn't so terrifying that this lying narcissist made it into the Cabinet.

Most of us would crawl into a small hole and never crawl out again, if we'd destroyed our family and ourselves through our lying, selfishness and criminality. But, then, Chris Huhne, the poor lamb, doesn't see it like that, suffering as he does from an acute pyschological disorder.